Low Voltage level problem in STM32 system chip

[nomi114]

Dear all, hope you are doing great. I am designing a circuit using EasyEDA simulation tool. But I am facing a problem after connecting the relay to the single-Chip IC (STM32 103RTC6). The low voltage is showing around 2V, whereas it was originally supposed to be 0 volts. I am still unable to understand why it is, so I need your help, please.

 

[berkeman]

I see from your thread about this in the allaboutcircuits forum that you will be able to share the schematic tomorrow. Don't worry if parts of it are in Chinese -- a schematic uses symbols and numbers for most of the information.

I also see from that other thread that you are a student there, so I've moved your thread to the schoolwork forums for you.

 

[nomi114]

Thank you So much sir for your kindness and help. As the other mentor gave me some suggestions, I am working on it. If I didn't resolve my problem, then I will upload my query again here. Thank you, again dear Sir.

 

[nomi114]

Dear all, hope you are doing great. I have been working diligently on the hardware issue, but unfortunately, I have been unable to resolve it. After connecting the relay to the single-Chip IC (STM32 103RTC6), I noticed that there is a disturbance in the voltages. I have attached my schematic files for your review. Could you please take a look at them and let me know if you see any potential faults or issues? I would greatly appreciate your expertise and guidance on this matter. Thank you once again for your time and consideration.